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SCAN18245T

Non-Inverting Transceiver with 3-STATE Outputs

Fairchild Semiconductor 

Truth Table

Inputs

G1 DIR1

L

L

L

L

L

H

L

H

H

X

H= HIGH Voltage Level

L= LOW Voltage Level

A1 (0–8)

B1 (0–8)

H

←

H

L

←

L

H

→

H

L

→

L

Z

Z

Functional Description

The SCAN18245 consists of two sets of nine non-inverting

bidirectional buffers with 3-STATE outputs and is intended

for bus-oriented applications. Direction pins (DIR1 and

DIR2) LOW enables data from B Ports to A Ports, when

Block Diagrams

Inputs

G2 DIR2

L

L

L

L

L

H

L

H

H

X

X= Immaterial

Z= High Impedance

A2 (0–8)

B2 (0–8)

H

←

H

L

←

L

H

→

H

L

→

L

Z

Z

HIGH enables data from A Ports to B Ports. The Output

Enable pins (G1 and G2) when HIGH disables both A and

B Ports by placing them in a high impedance condition.

A1, B1, G1 and DIR1

A2, B2, G2 and DIR2

Note: BSR stands for Boundary Scan Register.

Note: BSR stands for Boundary Scan Register.

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